Abstract: An extruded plastic shape made to snap over the top of a barrel whose cover has been removed by means of suitable cutting devices, and containing an undercut to clear the outside bead of the container and an opposing undercut to clear the cut edge which is produced on the inside edge of the barrel, protecting people from injury sustained from said cut edge. This material could be available in coil form, fit over the barrel, then cut to length at the site.

Abstract: Trimming apparatus for cutting the side walls of containers to predetermined, dimensional requirements so that such containers will be properly sized for subsequent usage. The apparatus is comprised of support means for holding an uncut container and an adjustable cutter assembly adapted to move along the support means and cut the wall of the container along desired lines in a synchronized manner. Each of the cutters include at least two knives that track on the same cut line with the leading knife cutting only partially through the side wall of the container while the following knife completes the cut. The apparatus also includes loading means for loading uncut containers and means for removing the cut portions.

Abstract: A device for relaxing or removing tension in the side wall area adjacent and along a welded seam in thermoplastic containers.